20690754 has 32 divisors (see below), whose sum is σ = 49351680. Its totient is φ = 5654352.

The previous prime is 20690737. The next prime is 20690767. The reversal of 20690754 is 45709602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9744 + ... + 11675.

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

Almost surely, 2^20690754 is an apocalyptic number.

20690754 is an abundant number, since it is smaller than the sum of its proper divisors (28660926).

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

20690754 is a wasteful number, since it uses less digits than its factorization.

20690754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21454.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20690754 is about 4548.7090476310. The cubic root of 20690754 is about 274.5314511692.

The spelling of 20690754 in words is "twenty million, six hundred ninety thousand, seven hundred fifty-four".