20610428 has 24 divisors (see below), whose sum is σ = 37013760. Its totient is φ = 10038080.

The previous prime is 20610427. The next prime is 20610431. The reversal of 20610428 is 82401602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20610427) 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, 40238 + ... + 40746.

It is an arithmetic number, because the mean of its divisors is an integer number (1542240).

Almost surely, 2^20610428 is an apocalyptic number.

It is an amenable number.

20610428 is a deficient number, since it is larger than the sum of its proper divisors (16403332).

20610428 is a wasteful number, since it uses less digits than its factorization.

20610428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20610428 is about 4539.8709232752. The cubic root of 20610428 is about 274.1757268691.

The spelling of 20610428 in words is "twenty million, six hundred ten thousand, four hundred twenty-eight".