405312864 has 96 divisors (see below), whose sum is σ = 1221816960. Its totient is φ = 116352000.

The previous prime is 405312857. The next prime is 405312871. The reversal of 405312864 is 468213504.

It is an interprime number because it is at equal distance from previous prime (405312857) and next prime (405312871).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9964 + ... + 30164.

It is an arithmetic number, because the mean of its divisors is an integer number (12727260).

Almost surely, 2^405312864 is an apocalyptic number.

405312864 is a gapful number since it is divisible by the number (44) 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 405312864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610908480).

405312864 is an abundant number, since it is smaller than the sum of its proper divisors (816504096).

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

405312864 is a wasteful number, since it uses less digits than its factorization.

405312864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20244 (or 20236 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 405312864 is about 20132.3834654519. The cubic root of 405312864 is about 740.0540890583.

The spelling of 405312864 in words is "four hundred five million, three hundred twelve thousand, eight hundred sixty-four".