70139484 has 72 divisors (see below), whose sum is σ = 193834368. Its totient is φ = 21288960.

The previous prime is 70139471. The next prime is 70139497. The reversal of 70139484 is 48493107.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70139471) and next prime (70139497).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17124 + ... + 20820.

It is an arithmetic number, because the mean of its divisors is an integer number (2692144).

Almost surely, 2^70139484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70139484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96917184).

70139484 is an abundant number, since it is smaller than the sum of its proper divisors (123694884).

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

70139484 is a wasteful number, since it uses less digits than its factorization.

70139484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70139484 is about 8374.9318803200. The cubic root of 70139484 is about 412.4020880560.

The spelling of 70139484 in words is "seventy million, one hundred thirty-nine thousand, four hundred eighty-four".