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103010440 = 23513198097
BaseRepresentation
bin1100010001111…
…01000010001000
321011211110202111
412020331002020
5202332313230
614115512104
72360400661
oct610750210
9234743674
10103010440
11531682a5
122a5b8634
1318458b30
14d976368
15909b92a
hex623d088

103010440 has 32 divisors (see below), whose sum is σ = 249603480. Its totient is φ = 38034432.

The previous prime is 103010431. The next prime is 103010441. The reversal of 103010440 is 44010301.

It can be written as a sum of positive squares in 4 ways, for example, as 91814724 + 11195716 = 9582^2 + 3346^2 .

It is a super-2 number, since 2×1030104402 = 21222301497987200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 103010440.

It is not an unprimeable number, because it can be changed into a prime (103010441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98529 + ... + 99568.

Almost surely, 2103010440 is an apocalyptic number.

103010440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103010440 is an abundant number, since it is smaller than the sum of its proper divisors (146593040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103010440 is a wasteful number, since it uses less digits than its factorization.

103010440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198121 (or 198117 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 103010440 is about 10149.4058939428. The cubic root of 103010440 is about 468.7706517716.

Adding to 103010440 its reverse (44010301), we get a palindrome (147020741).

The spelling of 103010440 in words is "one hundred three million, ten thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 198097 396194 792388 990485 1584776 1980970 2575261 3961940 5150522 7923880 10301044 12876305 20602088 25752610 51505220 103010440