70304540 has 24 divisors (see below), whose sum is σ = 147928032. Its totient is φ = 28066880.

The previous prime is 70304519. The next prime is 70304557. The reversal of 70304540 is 4540307.

It is a super-2 number, since 2×70304540² = 9885456689223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7985 + ... + 14295.

It is an arithmetic number, because the mean of its divisors is an integer number (6163668).

Almost surely, 2^70304540 is an apocalyptic number.

It is an amenable number.

70304540 is an abundant number, since it is smaller than the sum of its proper divisors (77623492).

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

70304540 is a wasteful number, since it uses less digits than its factorization.

70304540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6875 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 70304540 is about 8384.7802594940. The cubic root of 70304540 is about 412.7253302109.

Adding to 70304540 its reverse (4540307), we get a palindrome (74844847).

The spelling of 70304540 in words is "seventy million, three hundred four thousand, five hundred forty".