3139730 has 64 divisors (see below), whose sum is σ = 6905088. Its totient is φ = 1013760.

The previous prime is 3139727. The next prime is 3139733. The reversal of 3139730 is 379313.

3139730 = 506² + 507² + ... + 517².

It is an interprime number because it is at equal distance from previous prime (3139727) and next prime (3139733).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3139730.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139733) 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, 42974 + ... + 43046.

It is an arithmetic number, because the mean of its divisors is an integer number (107892).

Almost surely, 2^3139730 is an apocalyptic number.

3139730 is an abundant number, since it is smaller than the sum of its proper divisors (3765358).

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

3139730 is a wasteful number, since it uses less digits than its factorization.

3139730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 3139730 is about 1771.9283281217. The cubic root of 3139730 is about 146.4302377647.

The spelling of 3139730 in words is "three million, one hundred thirty-nine thousand, seven hundred thirty".