51429384 has 32 divisors (see below), whose sum is σ = 142860000. Its totient is φ = 17143056.

The previous prime is 51429379. The next prime is 51429397. The reversal of 51429384 is 48392415.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 118834 + ... + 119265.

It is an arithmetic number, because the mean of its divisors is an integer number (4464375).

Almost surely, 2^51429384 is an apocalyptic number.

51429384 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51429384 is an abundant number, since it is smaller than the sum of its proper divisors (91430616).

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

51429384 is a wasteful number, since it uses less digits than its factorization.

51429384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238114 (or 238104 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 51429384 is about 7171.4283096187. The cubic root of 51429384 is about 371.8808150963.

The spelling of 51429384 in words is "fifty-one million, four hundred twenty-nine thousand, three hundred eighty-four".