80421264 has 120 divisors (see below), whose sum is σ = 280642752. Its totient is φ = 20885760.

The previous prime is 80421259. The next prime is 80421269. The reversal of 80421264 is 46212408.

It is an interprime number because it is at equal distance from previous prime (80421259) and next prime (80421269).

It is not an unprimeable number, because it can be changed into a prime (80421269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7462 + ... + 14714.

Almost surely, 2^80421264 is an apocalyptic number.

80421264 is a gapful number since it is divisible by the number (84) 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 80421264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140321376).

80421264 is an abundant number, since it is smaller than the sum of its proper divisors (200221488).

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

80421264 is a wasteful number, since it uses less digits than its factorization.

80421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285 (or 7276 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 80421264 is about 8967.7903632946. The cubic root of 80421264 is about 431.6419358100.

Subtracting from 80421264 its reverse (46212408), we obtain a triangular number (34208856 = T₈₂₇₁).

The spelling of 80421264 in words is "eighty million, four hundred twenty-one thousand, two hundred sixty-four".