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1022021040 = 243517872383
BaseRepresentation
bin111100111010101…
…100110110110000
32122020010001022010
4330322230312300
54043114133130
6245225242520
734220015115
oct7472546660
92566101263
101022021040
114849a4597
12246333440
1313397a4a1
1499a4090c
hex3ceacdb0

1022021040 has 80 divisors (see below), whose sum is σ = 3171368448. Its totient is φ = 272272128.

The previous prime is 1022021017. The next prime is 1022021071. The reversal of 1022021040 is 401202201.

Adding to 1022021040 its reverse (401202201), we get a palindrome (1423223241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427689 + ... + 430071.

Almost surely, 21022021040 is an apocalyptic number.

1022021040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022021040 is an abundant number, since it is smaller than the sum of its proper divisors (2149347408).

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

1022021040 is a wasteful number, since it uses less digits than its factorization.

1022021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1022021040 is about 31969.0637961139. The cubic root of 1022021040 is about 1007.2871156256.

The spelling of 1022021040 in words is "one billion, twenty-two million, twenty-one thousand, forty".