145640264 has 32 divisors (see below), whose sum is σ = 340459200. Its totient is φ = 56742720.

The previous prime is 145640239. The next prime is 145640267. The reversal of 145640264 is 462046541.

It is a super-2 number, since 2×145640264² = 42422172995979392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145640264.

It is not an unprimeable number, because it can be changed into a prime (145640267) 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, 117599 + ... + 118830.

It is an arithmetic number, because the mean of its divisors is an integer number (10639350).

Almost surely, 2^145640264 is an apocalyptic number.

145640264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145640264 is an abundant number, since it is smaller than the sum of its proper divisors (194818936).

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

145640264 is a wasteful number, since it uses less digits than its factorization.

145640264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236453 (or 236449 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 145640264 is about 12068.1508111226. The cubic root of 145640264 is about 526.1309123956.

The spelling of 145640264 in words is "one hundred forty-five million, six hundred forty thousand, two hundred sixty-four".