7428631 has 8 divisors (see below), whose sum is σ = 8634240. Its totient is φ = 6259128.

The previous prime is 7428599. The next prime is 7428649. The reversal of 7428631 is 1368247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7428631 - 2⁵ = 7428599 is a prime.

It is a super-2 number, since 2×7428631² = 110369117068322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7428593 and 7428602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8581 + ... + 9406.

It is an arithmetic number, because the mean of its divisors is an integer number (1079280).

Almost surely, 2^7428631 is an apocalyptic number.

7428631 is a deficient number, since it is larger than the sum of its proper divisors (1205609).

7428631 is a wasteful number, since it uses less digits than its factorization.

7428631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18053.

The product of its digits is 8064, while the sum is 31.

The square root of 7428631 is about 2725.5515038245. The cubic root of 7428631 is about 195.1205128389.

The spelling of 7428631 in words is "seven million, four hundred twenty-eight thousand, six hundred thirty-one".