Search a number
-
+
140898720 = 25351731557
BaseRepresentation
bin10000110010111…
…11000110100000
3100211010101201010
420121133012200
5242032224340
621551540520
73330422304
oct1031370640
9324111633
10140898720
1172596326
123b22a740
1323263431
14149d9d04
15c582b80
hex865f1a0

140898720 has 192 divisors, whose sum is σ = 485968896. Its totient is φ = 34160640.

The previous prime is 140898697. The next prime is 140898749. The reversal of 140898720 is 27898041.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252682 + ... + 253238.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2140898720 is an apocalyptic number.

140898720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140898720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242984448).

140898720 is an abundant number, since it is smaller than the sum of its proper divisors (345070176).

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

140898720 is a wasteful number, since it uses less digits than its factorization.

140898720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 140898720 is about 11870.0766636109. The cubic root of 140898720 is about 520.3581359299.

It can be divided in two parts, 1408 and 98720, that added together give a triangular number (100128 = T447).

The spelling of 140898720 in words is "one hundred forty million, eight hundred ninety-eight thousand, seven hundred twenty".