290672140 has 96 divisors (see below), whose sum is σ = 688129344. Its totient is φ = 102236160.

The previous prime is 290672119. The next prime is 290672147. The reversal of 290672140 is 41276092.

It is not an unprimeable number, because it can be changed into a prime (290672147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1130892 + ... + 1131148.

It is an arithmetic number, because the mean of its divisors is an integer number (7168014).

Almost surely, 2^290672140 is an apocalyptic number.

290672140 is a gapful number since it is divisible by the number (20) 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 290672140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344064672).

290672140 is an abundant number, since it is smaller than the sum of its proper divisors (397457204).

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

290672140 is a wasteful number, since it uses less digits than its factorization.

290672140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 290672140 is about 17049.1096541726. The cubic root of 290672140 is about 662.4215756224.

Subtracting from 290672140 its product of nonzero digits (6048), we obtain a palindrome (290666092).

The spelling of 290672140 in words is "two hundred ninety million, six hundred seventy-two thousand, one hundred forty".