20770074 has 32 divisors (see below), whose sum is σ = 49707840. Its totient is φ = 6390576.

The previous prime is 20770049. The next prime is 20770109. The reversal of 20770074 is 47007702.

It is a happy number.

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

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, 14092 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (1553370).

Almost surely, 2^20770074 is an apocalyptic number.

20770074 is an abundant number, since it is smaller than the sum of its proper divisors (28937766).

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

20770074 is a wasteful number, since it uses less digits than its factorization.

20770074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29611 (or 29605 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20770074 is about 4557.4196646787. The cubic root of 20770074 is about 274.8818180888.

Adding to 20770074 its reverse (47007702), we get a palindrome (67777776).

The spelling of 20770074 in words is "twenty million, seven hundred seventy thousand, seventy-four".