152031640 has 32 divisors (see below), whose sum is σ = 344580480. Its totient is φ = 60366592.

The previous prime is 152031637. The next prime is 152031641. The reversal of 152031640 is 46130251.

152031640 = T₁₄₉ + T₁₅₀ + ... + T₉₇₀.

It is a super-2 number, since 2×152031640² = 46227239122179200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152031641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392 + ... + 19351.

It is an arithmetic number, because the mean of its divisors is an integer number (10768140).

Almost surely, 2^152031640 is an apocalyptic number.

152031640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152031640 is an abundant number, since it is smaller than the sum of its proper divisors (192548840).

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

152031640 is a wasteful number, since it uses less digits than its factorization.

152031640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27891 (or 27887 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 152031640 is about 12330.1111106105. Note that the first 5 decimals coincide. The cubic root of 152031640 is about 533.7173571000.

Adding to 152031640 its reverse (46130251), we get a palindrome (198161891).

The spelling of 152031640 in words is "one hundred fifty-two million, thirty-one thousand, six hundred forty".