61711428 has 24 divisors (see below), whose sum is σ = 152464032. Its totient is φ = 19360384.

The previous prime is 61711427. The next prime is 61711453. The reversal of 61711428 is 82411716.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61711395 and 61711404.

It is not an unprimeable number, because it can be changed into a prime (61711427) 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, 151050 + ... + 151457.

It is an arithmetic number, because the mean of its divisors is an integer number (6352668).

Almost surely, 2^61711428 is an apocalyptic number.

61711428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61711428 is an abundant number, since it is smaller than the sum of its proper divisors (90752604).

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

61711428 is a wasteful number, since it uses less digits than its factorization.

61711428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302531 (or 302529 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 61711428 is about 7855.6621617786. The cubic root of 61711428 is about 395.1741538305.

It can be divided in two parts, 6171 and 1428, that multiplied together give a palindrome (8812188).

The spelling of 61711428 in words is "sixty-one million, seven hundred eleven thousand, four hundred twenty-eight".