1392272490 has 64 divisors (see below), whose sum is σ = 3907639296. Its totient is φ = 310830912.

The previous prime is 1392272489. The next prime is 1392272491. The reversal of 1392272490 is 942722931.

It is an interprime number because it is at equal distance from previous prime (1392272489) and next prime (1392272491).

It is not an unprimeable number, because it can be changed into a prime (1392272491) 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, 68062 + ... + 86121.

It is an arithmetic number, because the mean of its divisors is an integer number (61056864).

Almost surely, 2^1392272490 is an apocalyptic number.

1392272490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1392272490 is an abundant number, since it is smaller than the sum of its proper divisors (2515366806).

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

1392272490 is a wasteful number, since it uses less digits than its factorization.

1392272490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154243.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1392272490 is about 37313.1677829691. The cubic root of 1392272490 is about 1116.6268863332.

The spelling of 1392272490 in words is "one billion, three hundred ninety-two million, two hundred seventy-two thousand, four hundred ninety".