152561640 has 384 divisors, whose sum is σ = 612864000. Its totient is φ = 29652480.

The previous prime is 152561627. The next prime is 152561641. The reversal of 152561640 is 46165251.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 152561598 and 152561607.

It is not an unprimeable number, because it can be changed into a prime (152561641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1931121 + ... + 1931199.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^152561640 is an apocalyptic number.

152561640 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 152561640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306432000).

152561640 is an abundant number, since it is smaller than the sum of its proper divisors (460302360).

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

152561640 is a wasteful number, since it uses less digits than its factorization.

152561640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 152561640 is about 12351.5845137375. The cubic root of 152561640 is about 534.3368380805.

The spelling of 152561640 in words is "one hundred fifty-two million, five hundred sixty-one thousand, six hundred forty".