1390066272 has 240 divisors, whose sum is σ = 4876768512. Its totient is φ = 379779840.

The previous prime is 1390066243. The next prime is 1390066273. The reversal of 1390066272 is 2726600931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390066273) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 415647 + ... + 418977.

Almost surely, 2^1390066272 is an apocalyptic number.

1390066272 is a gapful number since it is divisible by the number (12) 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 1390066272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438384256).

1390066272 is an abundant number, since it is smaller than the sum of its proper divisors (3486702240).

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

1390066272 is a wasteful number, since it uses less digits than its factorization.

1390066272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383 (or 3366 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1390066272 is about 37283.5925307634. The cubic root of 1390066272 is about 1116.0367660451.

The spelling of 1390066272 in words is "one billion, three hundred ninety million, sixty-six thousand, two hundred seventy-two".