20737490 has 16 divisors (see below), whose sum is σ = 38950848. Its totient is φ = 7934256.

The previous prime is 20737487. The next prime is 20737517. The reversal of 20737490 is 9473702.

It is a happy number.

It is a Curzon 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, 44852 + ... + 45311.

It is an arithmetic number, because the mean of its divisors is an integer number (2434428).

Almost surely, 2^20737490 is an apocalyptic number.

20737490 is a deficient number, since it is larger than the sum of its proper divisors (18213358).

20737490 is a wasteful number, since it uses less digits than its factorization.

20737490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90193.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 20737490 is about 4553.8434316520. The cubic root of 20737490 is about 274.7379983956.

The spelling of 20737490 in words is "twenty million, seven hundred thirty-seven thousand, four hundred ninety".