43380864 has 48 divisors (see below), whose sum is σ = 124836270. Its totient is φ = 14459904.

The previous prime is 43380853. The next prime is 43380877. The reversal of 43380864 is 46808334.

It can be written as a sum of positive squares in only one way, i.e., 31270464 + 12110400 = 5592^2 + 3480^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×43380864² = 3763798722772992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17677 + ... + 19980.

Almost surely, 2^43380864 is an apocalyptic number.

It is an amenable number.

43380864 is an abundant number, since it is smaller than the sum of its proper divisors (81455406).

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

43380864 is a wasteful number, since it uses less digits than its factorization.

43380864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37677 (or 37662 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 43380864 is about 6586.4151099061. The cubic root of 43380864 is about 351.3711223051.

It can be divided in two parts, 43380 and 864, that added together give a palindrome (44244).

The spelling of 43380864 in words is "forty-three million, three hundred eighty thousand, eight hundred sixty-four".