78902130 has 64 divisors (see below), whose sum is σ = 200844288. Its totient is φ = 19802880.

The previous prime is 78902129. The next prime is 78902141. The reversal of 78902130 is 3120987.

It is a happy number.

It is a super-2 number, since 2×78902130² = 12451092237073800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33264 + ... + 35556.

It is an arithmetic number, because the mean of its divisors is an integer number (3138192).

Almost surely, 2^78902130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78902130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100422144).

78902130 is an abundant number, since it is smaller than the sum of its proper divisors (121942158).

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

78902130 is a wasteful number, since it uses less digits than its factorization.

78902130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 78902130 is about 8882.6870934419. The cubic root of 78902130 is about 428.9067776859.

78902130 divided by its sum of digits (30) gives a triangular number (2630071 = T₂₂₉₃).

The spelling of 78902130 in words is "seventy-eight million, nine hundred two thousand, one hundred thirty".