78429050 has 48 divisors (see below), whose sum is σ = 172488960. Its totient is φ = 25959360.

The previous prime is 78429047. The next prime is 78429053. The reversal of 78429050 is 5092487.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78429047) and next prime (78429053).

It is a super-2 number, since 2×78429050² = 12302231767805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 78429050.

It is not an unprimeable number, because it can be changed into a prime (78429053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6287 + ... + 14013.

It is an arithmetic number, because the mean of its divisors is an integer number (3593520).

Almost surely, 2^78429050 is an apocalyptic number.

78429050 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78429050 is an abundant number, since it is smaller than the sum of its proper divisors (94059910).

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

78429050 is a wasteful number, since it uses less digits than its factorization.

78429050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 78429050 is about 8856.0177280762. The cubic root of 78429050 is about 428.0478481749.

The spelling of 78429050 in words is "seventy-eight million, four hundred twenty-nine thousand, fifty".