307890102840 has 128 divisors (see below), whose sum is σ = 978249648960. Its totient is φ = 77254959104.

The previous prime is 307890102803. The next prime is 307890102901. The reversal of 307890102840 is 48201098703.

It is a junction number, because it is equal to n+sod(n) for n = 307890102792 and 307890102801.

It is a congruent number.

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, 9197974 + ... + 9231386.

Almost surely, 2^307890102840 is an apocalyptic number.

307890102840 is a gapful number since it is divisible by the number (30) 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 307890102840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489124824480).

307890102840 is an abundant number, since it is smaller than the sum of its proper divisors (670359546120).

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

307890102840 is a wasteful number, since it uses less digits than its factorization.

307890102840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37961 (or 37957 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 307890102840 in words is "three hundred seven billion, eight hundred ninety million, one hundred two thousand, eight hundred forty".