53702640 has 60 divisors (see below), whose sum is σ = 180353784. Its totient is φ = 14320512.

The previous prime is 53702639. The next prime is 53702641. The reversal of 53702640 is 4620735.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53702639) and next prime (53702641).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53702641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36574 + ... + 38013.

Almost surely, 2^53702640 is an apocalyptic number.

It is an amenable number.

53702640 is an abundant number, since it is smaller than the sum of its proper divisors (126651144).

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

53702640 is a wasteful number, since it uses less digits than its factorization.

53702640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74606 (or 74597 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53702640 is about 7328.2085123173. The cubic root of 53702640 is about 377.2812410313.

The spelling of 53702640 in words is "fifty-three million, seven hundred two thousand, six hundred forty".