7402644 has 24 divisors (see below), whose sum is σ = 19192320. Its totient is φ = 2467512.

The previous prime is 7402631. The next prime is 7402649. The reversal of 7402644 is 4462047.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7402649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34164 + ... + 34379.

It is an arithmetic number, because the mean of its divisors is an integer number (799680).

Almost surely, 2^7402644 is an apocalyptic number.

It is an amenable number.

7402644 is an abundant number, since it is smaller than the sum of its proper divisors (11789676).

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

7402644 is a wasteful number, since it uses less digits than its factorization.

7402644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68556 (or 68548 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 7402644 is about 2720.7800352105. The cubic root of 7402644 is about 194.8927220577.

The spelling of 7402644 in words is "seven million, four hundred two thousand, six hundred forty-four".